Mask



FIG. 1 is a perspective view of a first embodiment of a mask showing our new design;

FIG. 2 is a front view of the mask shown in FIG. 1;

FIG. 3 is a top plan view of the mask shown in FIG. 1;

FIG. 4 is a side view of the mask shown in FIG. 1;

FIG. 5 is a rear view of the mask shown in FIG. 1;

FIG. 6 is a bottom plan view of the mask shown in FIG. 1;

FIG. 7 is a perspective view of a second embodiment of a mask;

FIG. 8 is a front view of the mask shown in FIG. 7;

FIG. 9 is a top view of the mask shown in FIG. 7;

FIG. 10 is a side view of the mask shown in FIG. 7;

FIG. 11 is a rear view of the mask shown in FIG. 7; and,

FIG. 12 is a bottom plan view of the mask shown in FIG. 7. 

The ornamental design for a mask, as shown and described. 